I am running an ESP32 off of a LiPo battery (3.7V), and I have the a LiPo Solar Battery charger from DFRobot.
The ESP32 component uses around 110mA (measured with a DMM), and it is always on. The solar charger can handle 4.4-6V.
How do I go about calculating how much power I really need for my project if I want to keep the battery topped off?
I'm also considering the Adafruit LiPo Solar charger; however, it is a lot more expensive. I've been running a few other smaller components using the DFRobot solar charger with great success (they use around 1-4mA).